Catheter



FIG. 1 is an isometric view of a catheter according to the present invention.

FIG. 2 is a front elevation view of the catheter shown in FIG. 1, with the rear and side elevation views being identical.

FIG. 3 is a top view of the catheter shown in FIG. 1; and,

FIG. 4 is a bottom view of the catheter shown in FIG. 1.

The broken lines in FIG. 3 represent a portion of the article excluded from the claim. 

CLAIM The ornamental design for a catheter, as shown and described. 